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//! Utils and helpers

use crate::{
    params::{Patch, PatchParams},
    request, Request,
};
use chrono::Utc;
use k8s_openapi::api::apps::v1::{DaemonSet, Deployment, ReplicaSet, StatefulSet};

/// Restartable Resource marker trait
pub trait Restart {}

impl Restart for Deployment {}
impl Restart for DaemonSet {}
impl Restart for StatefulSet {}
impl Restart for ReplicaSet {}

impl Request {
    /// Restart a resource
    pub fn restart(&self, name: &str) -> Result<http::Request<Vec<u8>>, request::Error> {
        let patch = serde_json::json!({
          "spec": {
            "template": {
              "metadata": {
                "annotations": {
                  "kube.kubernetes.io/restartedAt": Utc::now().to_rfc3339()
                }
              }
            }
          }
        });

        let pparams = PatchParams::default();
        self.patch(name, &pparams, &Patch::Merge(patch))
    }
}


#[cfg(test)]
mod test {
    #[test]
    fn restart_patch_is_correct() {
        use crate::{params::Patch, request::Request, resource::Resource};
        use k8s_openapi::api::apps::v1 as appsv1;

        let url = appsv1::Deployment::url_path(&(), Some("ns"));
        let req = Request::new(url).restart("mydeploy").unwrap();
        assert_eq!(req.uri(), "/apis/apps/v1/namespaces/ns/deployments/mydeploy?");
        assert_eq!(req.method(), "PATCH");
        assert_eq!(
            req.headers().get("Content-Type").unwrap().to_str().unwrap(),
            Patch::Merge(()).content_type()
        );
    }
}